code: def test_on():
      style = Style.on({"foo": "bar"}, click="CLICK") + Style(
          color="red"
      )
      assert style.meta == {"foo": "bar", "@click": "CLICK"}
  
imports: import pytest
  from rich import errors
  from rich.color import Color, ColorSystem, ColorType
  from rich.style import Style, StyleStack
label_desc: Use image node_id 25 for calling a global function with example usage: test_on() without return types